Kata Library
Sign Up
Time to claim your honor
Training
Practice
Complete challenging
Kata
to earn honor and ranks. Re-train to hone technique
Freestyle Sparring
Take turns remixing and refactoring others code through
Kumite
Community
Leaderboards
Achieve honor and move up the global leaderboards
Chat
Join our
Discord
server and chat with your fellow code warriors
Discussions
View our
Github Discussions
board to discuss general Codewars topics
About
Docs
Learn about all of the different aspects of Codewars
Blog
Read the latest news from Codewars and the community
Log In
Sign Up
Library
Collections
Newest
Oldest
Popularity
Positive Feedback
Most Completed
Least Completed
Hardest
Easiest
Name
Relevance
Low Satisfaction
All
My Languages
Agda (Beta)
BF (Beta)
C
CFML (Beta)
Clojure
COBOL (Beta)
CoffeeScript
CommonLisp (Beta)
Coq
C++
Crystal
C#
D (Beta)
Dart
Elixir
Elm (Beta)
Erlang (Beta)
Factor (Beta)
Forth (Beta)
Fortran (Beta)
F#
Go
Groovy
Haskell
Haxe (Beta)
Idris (Beta)
Java
JavaScript
Julia (Beta)
Kotlin
λ Calculus (Beta)
Lean
Lua
NASM
Nim (Beta)
Objective-C (Beta)
OCaml (Beta)
Pascal (Beta)
Perl (Beta)
PHP
PowerShell (Beta)
Prolog (Beta)
PureScript (Beta)
Python
R (Beta)
Racket
Raku (Beta)
Reason (Beta)
RISC-V (Beta)
Ruby
Rust
Scala
Shell
Solidity (Beta)
SQL
Swift
TypeScript
VB (Beta)
Approved & Beta
Approved
Beta
All
Kata I have not trained on
Kata I have not completed
Kata I have completed
8 kyu
easiest
7 kyu
6 kyu
5 kyu
4 kyu
3 kyu
2 kyu
1 kyu
hardest
ASCII Art
1
Algorithms
21
Arrays
3
Combinatorics
1
Data Science
1
Data Structures
7
Dynamic Programming
4
Functional Programming
1
Fundamentals
9
Games
1
Linear Algebra
1
Lists
1
Logic
2
Mathematics
31
Matrix
1
Memoization
2
Number Theory
2
Performance
5
Probability
2
Puzzles
5
Recursion
31
Regular Expressions
1
Statistics
3
Strings
3
Theorem Proving
1
Trees
1
FEATURED TAGS
Cryptography
Data Science
Debugging
Games
Tutorials
31 Kata Found
7 kyu
Recursion #2 - Fibonacci
3,206
gabrielsiedler
1 Issue Reported
Fundamentals
Recursion
Mathematics
5 kyu
Reaching a number by x3 or +5 (or is it possible?)
115
WestwardLand968
Algorithms
Recursion
Mathematics
Logic
Performance
4 kyu
Matrix Determinant
24,735
pjfranzini
8 Issues Reported
Matrix
Linear Algebra
Mathematics
Recursion
Algorithms
6 kyu
Mutual Recursion
8,801
dnolan
1 Issue Reported
Mathematics
Algorithms
Recursion
6 kyu
Something similar to RokuLiuYeoseot- Nacci
197
raulbc777
1 Issue Reported
Fundamentals
Mathematics
Recursion
5 kyu
Working With Coloured Numbers
400
raulbc777
2 Issues Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
Strings
Recursion
Dynamic Programming
5 kyu
Sequence of Power Digits Sum
537
raulbc777
1 Issue Reported
Algorithms
Recursion
Data Structures
Mathematics
6 kyu
Dragon's Curve
1,035
user3482173
2 Issues Reported
Mathematics
Recursion
Algorithms
6 kyu
Ackermann Function
3,931
user3482173
4 Issues Reported
Mathematics
Algorithms
Recursion
6 kyu
Building Chains Using the Arithmetic Derivative of a Number
99
raulbc777
2 Issues Reported
Fundamentals
Mathematics
Recursion
4 kyu
The smallest number with a given number of divisors
171
user8729270
Mathematics
Recursion
Algorithms
Number Theory
Performance
6 kyu
Levels of Pascal's Pyramid
99
kylito
Arrays
Algorithms
Mathematics
Combinatorics
Recursion
6 kyu
The Book of Mormon
2,548
majakudlicka
2 Issues Reported
Fundamentals
Mathematics
Recursion
7 kyu
The wheat/rice and chessboard problem
9,339
GiacomoSorbi
Mathematics
Recursion
Puzzles
6 kyu
Product Partitions II
58
raulbc777
1 Issue Reported
Fundamentals
Data Structures
Mathematics
Recursion
Algorithms
5 kyu
Give me the Corresponding Proper Fraction!
72
raulbc777
Performance
Algorithms
Mathematics
Data Structures
Strings
Recursion
6 kyu
Inner Calls In Recursion I
172
raulbc777
1 Issue Reported
Fundamentals
Data Structures
Algorithms
Mathematics
Recursion
7 kyu
nova polynomial 1. add
713
hgamboa
1 Issue Reported
Algorithms
Mathematics
Recursion
Arrays
6 kyu
Toothpick Sequence
101
dasoca
1 Issue Reported
Algorithms
Mathematics
Recursion
5 kyu
Boxes in boxes
118
dfhwze
Algorithms
ASCII Art
Performance
Strings
Puzzles
Memoization
Recursion
Mathematics
Dynamic Programming
3 kyu
Prime counting
83
user8729270
Mathematics
Recursion
Algorithms
Memoization
Performance
Number Theory
6 kyu
Verified Horner's method
90
dramforever
Theorem Proving
Functional Programming
Recursion
Mathematics
Algorithms
5 kyu
Text IFS (Iterated Function System)
63
EFHIII
Mathematics
Recursion
Algorithms
6 kyu
Infinite Diceworks: MeanMaxing your rolls
116
Voile
Mathematics
Dynamic Programming
Recursion
Probability
Statistics
Puzzles
6 kyu
Infinite Diceworks: MeanMaxing your rolls (Quantum Mechanically)
35
Voile
Mathematics
Dynamic Programming
Recursion
Probability
Statistics
Puzzles
5 kyu
Lisp Combination Trees
41
user2420289
2 Issues Reported
Trees
Recursion
Regular Expressions
Mathematics
Data Structures
Algorithms
6 kyu
Filtering Values For an Election
221
raulbc777
5 Issues Reported
Mathematics
Statistics
Recursion
Data Science
6 kyu
Array Hyperrectangularity
66
sgerodes
Mathematics
Arrays
Recursion
Algorithms
Data Structures
Lists
7 kyu
Recurrence by Recursion
454
donaldsebleung
1 Issue Reported
Recursion
Mathematics
Fundamentals
4 kyu
Find all possible number combos that sum to a number
1,437
GaurangTandon
3 Issues Reported
Fundamentals
Mathematics
Recursion
Algorithms
Loading...
Confirm
Collect:
undefined
Loading collection data...